_IS 958 : 2000 Indian Standard TEMPORARY CORROSION PREVENTIVES, GREASE TYPE, SOFT FILM - SPECIFICATION ( Second Revision ) ICS 75.100 - 0 BIS 2000 BUREAU MANAK OF INDIAN STANDARDS ZAFAR MARC BHAVAN, 9 BAHADUR SHAH NEW DELHI 110002 May 2000 Lubricants and Related Products Sectional Committee, PCD 4 FOREWORD This Indian Standard (Second Revision) was adopted by the Bureau of Indian Standards, after the draft finalized by the Lubricants and Related Products Sectional Committee had been approved by the Petroleum, Coal band Related Products Division Council. This Indian Standard has been prepared with a view to facilitate the supply to large and small scale consumer of a material of quality most suited for use under Indian climatic conditions. This standard forms one of a series of Indian Standard on temporary, corrosion preventives, including IS 1153 : 1975 `Specification for tempoary corrosion peventive, fluid, hard film, solvent deposited Cfirsfrevision)' IS 1154 : 1957 `Speficicaion for temporary corrosion preventive, fluid, soft film, solvent deposited, water displacing', IS 1674 : 1960 `Specification for temporary corrosion prevenive, fluid, soft film, slovent deposited' IS 6048 : 1960 `Specification for temporary corrosion preventives, soft film, hot dipping type'covering different types of temporary corrosion preventives. Considerable assistance has been drawn from these existing standards as well as the British Standard BS 7541 : 1992 `Specification for temporary preventives for the protection of metal surfaces against corrosion during transport and storage' and the Japanese Standard JIS K 2246-1994 `Rust preventive oils' in preparing this standard This standard was originally published in 1958 and subsequently revised in 1975. The present revision has been prepared as a result of a review of the standard in light of the present day requirement of the product. In this version (second revision) characteristics for types of film formed, humidity cabinet test, freedom from corrosive properties have been incorporated. One more grade of the preventive has been included and requirement for consistency has been modified. This standard covers the requirements of IS 6048 also. For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS 2 : 1960 `Rules for rounding off numerical values (revised)`. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard. IS 958 : 2000 Indian Standard -TEMPORARY CORROSIONPREVENTIVES, GREASETYPE, SOFTFILM- SPECIFICATION tSecond Revision ) 1 SCOPE 4 DEFINITION For the purpose of this standard, the temporary corrosion preventives, grease type, are materials used for the protection of metallic surfaces during transportation and storage. These are applied to the metallic surfaces and function by forming protective barriers or other appropriate mode of action at the metal surface. The corrosion preventives are readily removable by hot or cold solvents, wiping, detergent solutions or stripping. NOTE- The term temporary signifies ready removability of the corrosion preventive and not the duration of its efficacy. The corrosion preventives should completely wet the metal surfaces and form smooth continuous film when applied by suitable methods. 5 This standard prescribes the requirements and the method of sampling and tests for temporary corrosion preventives, grease, soft film suitable for the protection of cleans metal surfaces during transport and storage. 2 NORMATIVE REFERENCES The following Indian Standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication the editions indicated were valid. All standards are subject to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below: 1s No. 170 : 1986 410 : 1977 REQUIREMENTS Title Acetone (third revision) Cold rolled brass sheet, strip and foil (third revision) Cold rolled low carbon steel sheet 513 : 1994 and strips vourrh revision) Methanol (methyl alcohol) (second 517 : 1986 revision) Zinc base alloy ingots for die casting 713 : 1981 (second revision) Reagent grade water (third revision) 1070 : 1992 Methods of sampling of petroleum 1447 : 1966 and its products Methods of test for petroleum and 1448 its products: [P:Sl] : 1963 Copper strip corrosion test for lubricating greases [p:52] : 1971 Drop point (first revision) Determination of acidity and alkalinity in greases Cfirsr revision) [P:53) [P:60] :: 1979 1994 Consistency of lubricating greases by cone penetrometer (second revision) [P:61] : 1974 Evaporation loss in greases (Zhour drying) (first revision) 1839 : 1961 Toluene, reagent grade 3 GRADES The temporary corrosion pIreventives, grease type, soft :s: film shall be of two a) Grade 1; and/' b) Grade 2. 11 : 5.1 General Requirements 5.1.1The temporary corrosion preventives, grease, soft film shall be easily removable by applicable means such as wiping, action of solvents or detergents or manual stripping. This property shall be retained by the film after ageing also. 5.1.2 The temporary corrosion preventives shall be homogeneous materials consisting of film forming agents and other ingredients dissolved or dispersed in media as applicable for the different grades. They shall be free from dirt and other visible impurities and shall not contain any separated water. 5.2 Keeping Quality When stored in the original sealed containers under normal ambient conditions, the temporary corrosion preventives shall retain their properties and shall meet the requirements covered in this standard for the corresponding grades for a period of at least 12 months from the date of delivery. 5.3 Specific Requirements The temporary corrosion preventives shall comply with the applicable requirements for the grades covered in Table 1. 6 PACKING AND MARKING 6.1 Packing Material shall be packed in suitable containers of 1 IS 958 : 2000 Table 1 Requirements for Temporary Corrosion (Clause 5.3) SI No. Characteristic Requirement Grade 1 Grade 2 (4) Grease like semisolid Soft, greasy 240 80 2 3.0 360 [P [P Method of Test, Ref to Preventive, Grease Type, Soft Film : ] of IS 1448 Annex (6) A - (1) (2) Appearance at 25/3O"C 9 ii) iii) iv) v) vi) vii) viii) (3) Grease like semisolid Soft, greasy at 25°C. 300 80 percent by mass, 2 3.0 360 (5) Visual examination do [P:60] [P Type of film formed Consistencey, worked penetration MUX Drop point "C, Loss through MUX Evaporation Humidity Min drainage : 521 - loss. percent by mass, Mar cabinet test, h, passing, properties Min : 611 [P : "I - B C D - Freedom from corrosive a) b) Metal couples Copper (50°C. 3h). No corrosion No corrosion I No separation Report do [P [P [P Mar 1 1 No separation : 511 - c) Lead, percent by mass, mg/cm', MUX ix) x) xi) Stability Free organic acidity percent by mass (as oleic acid), Report do : 531 : 531 Free alkalinity (as calcium percent by mass hydroxide), `) Under preparation till such time it is published, ASTM D 1748 shall be followed. appropriate size as agreed to between and the supplier. 6.2 Marking 6.2.1 The containers shall be securely marked with the following: the purchaser closed and a> Indication b) 4 6.3.1 The use of Standard Mark is governed by the provisions of the Bureau of Indian Standards Act, 1986 and the Rules and Regulations made thereunder. The details of conditions under which the licence for the use of the Standard Mark may be granted to manufacturers or producers may be obtained from the Bureau of Indian Standards. 7 SAMPLING CONFORMITY AND CRITERIA FOR of source of manufacture; Name and grade of material; mass of material; trade-mark, if any; and Recognized c> Net e> Identification 6.3 BIS Certification Each container Mark. in code or otherwise to enable the lot of consignment or manufacture to be traced back from records. Marking 7.1 Representative samples of material shall be drawn as prescribed in IS 1447. 7.2 Tests for determining all the characteristics in Table 1 of the standard shall be conducted composite sample. given on the may also be marked with the Standard 7.3 The lot shall be declared as conforming to the requirements of this standard, if all the test results on the composite sample satisfy the requirements of this standard. 2 IS 958 : 2000 ANNEX A [Table 1, SZNo. (v)] METHOD FOR DRAINAGE TEST A-l APPARATUS A-l.1 Oven The oven shall be thermostatically controlled and capable of maintaining a temperature of 70 + 1°C. A-2 MATERIALS A-2.1 Mild Steel Panels The mild steel test panels required for this test shall be of panel-sheet (drawing type) specified in IS 513. The panels shall be approximately 80 mm x 40 mm x J.3 mm in size with a 6 mm diameter hole drilled centrally near one of the shorter edges. The panels shall be free from mill scale or oxides, pits, scratches and other surface imperfections. Ai2.2 Carborundum Powder (No. 150) A-2.3 Toluene or Acetone Confirming to IS 1839 or IS 170. A-3 PREPARATION OF TEST PANELS Polish the panels on both sides by means of a pad of filter paper and Carborundum powder and then degrease with toluene or acetone. Dry, cool and weigh to the nearest milligram. A-4 PROCEDURE A-4.1 Carry out the test in triplicate. A-4.2 Apply sufficient quantity of the corrosion preventive so as to give a residual film mass of 1.7 to 2.4 mg/cm*. Spread the material uniformly over both sides of the test panels by brushing, taking care that no deep brush marks are left on the panels. Finally, draw a doctor blade over the panels to ensure that the film is uniform all over. Suspend the panels for 24 hours in a vertical position at room temperature in a well ventilated position and out of direct sunlight. Cut off flush with the lower edge any material hanging as a bead from the panel. Weigh the coated panels to the nearest milligram. Suspend the coated panels vertically for 4 hours in an oven maintained at 70 e 1°C. After the specified period has elapsed, carefully remove the panels without jarring, suspend in a vertical position, and allow to cool at room temperature in a dust-free place. After removal of any material hanging as a bead from the lower edge, weigh the coated panel again to the nearest milligram. A-4.2.1 Calculate the loss in mass of the coated panel as percentage of the original mass of the coating. Report the average of the three results. ANNEX B [Table 1, SZNo. (viii)(a)] METHOD OF TEST FOR FREEDOM FROM CORROSIVE EFFECT ON METAL COUPLES B-l APPARATUS B-l.1 Oven The oven shall be thermostatically controlled and capable of maintaining a temperature of 50 + 1°C. B-l.2 Glass Containers Four suitable wide-mouthed heat-resistant glass containers, fitted with vented corks, shall be used. B-2 MATERIAL B-2.1 Test Panels The test panels of 50 mm x 25 mm shall be of the 3 following metals and composition. B-2.1.1 Mild Steel The mild steel test panels required for this test shall be of panel sheet (drawing type) specified in IS 513. B-2.1.2 Brass The brass test panels shall have the composition as prescribed for Grade CuZn37 of IS 410. B-2.1.3 Aluminum Alloy The aluminium alloy test panels shall have the composition as prescribed for Grade HS 14 or Grade HS 15 specified in IS 737. IS 958 : 2000 B-2.1.4 Magnesium Alloy The magnesium alloy following composition: test panels shall have -the 98 percent (by column) in strength. It shall not contain more than races of aldehydes and acids (see IS 517). B-3 CLEANING 0.05 0.03 1.0 to 2.0 0.02 0.02 0.03 0.005 0.02 remainder Max OF METAL PANELS a> Aluminum, b) c) 4 4 f-l Manganese, percent by mass, Max percent by mass B-3.1 Burnish the metal panels with emery cloth (in and aluminium alloys, mist Zinc percent by mass, Max Copper, percent by mass, Max Silicon, percent by mass, Max Iron, percent by mass, Max Nickel, percent by mass, Max Magnesium, percent by mass the case of magnesium pumice powder shall be used) to a smooth bright finish. Clean and degrease by swabbing Note). Finally, with cloth soaked in (see of in a current toluene or acetone and then rinse with methanol dry the metal panels warm, dry air and immediately During and after degreasing, forced. Clean and degrease use. utilize g) 3 for the test. h) Calcium, percent by mass, B-2.1.5 Zinc Base Alloy do not touch the metal the nuts and bolts before panels by bare hands, but handle with a pair of clean ~This zinc base alloy test panels shall composition as prescribed in IS 713. have the NOTE- In the case of magnesium alloy, dry methanol shall not be used. B-2.1.6 The pair of metals concerned shall be drilled centrally to accommodate a nut and bolt which shall be of brass, exclpt~in the case of mild steel aluminium alloy couple where a steel nut and bolt shall be used. The pair of metals shall be clamped firmly together in the form of a cross with an angle of 20" between their major axes before the test. B-2.2 Emery Cloth (No. 0) B-2.3 Toluene or Acetone Same as described B-2.4 Methanol The methanol shall be water-white and not less than in A-2.3. B-4 PROCEDURE B-4.1 Take sufficient quantity of temporary corrosion preventive in each of the four glass containers and introduce one metal couple in each of the containers such that half the tength of the metal couples is immersed in the corrosion preventive. Close the glass containers with the ventred corks and place them in the oven maintained at 50 + 1°C for 6 hours. Remove the glass containers from the oven and take out the metal couples from the containers. Seperate the metal panels of couples. Remove the film of temporary corrosion preventive by swabbing the metal panels with cloth soaked in toluene or acetone and visually examine for corrosiorl. ANNEX C [Table 1, SZNo. (viii)(c)] TEST FOR CORROSIVE EFFECT ON LEAD C-l APPARATUS C-l.1 Oven controlled and of 50 f 1°C. C-2 MATERIAL C-2.1 Lead Test Panels The test panels shall have the following composition: 99.99 The oven shall Abe thermostatically capable of maintaining a temperature C-l.2 Glass Container A wide-mouthed glass container fitted with liquidtight ground-glass stopper shall be used. Its capacity shall be approximately 500 ml and it shall be made from heat-resistant glass. a) b) cl d) e) 0 Metallic Antimony, Bismuth, lead, percent -by mass, Min percent by mass, Max percent by mass, Max percent Copper, percent by mass, Max 0.003 0.002 0.005 0.003 0.001 Iron, percent by mass, Max Nickel and cobalt together, by mass, Max 4 IS 958 : 2000 5.9 Silver, percent by mass, MUX h) Zinc, percent by mass, Max 0.002 0.002 Traces 0.01 j) Tin, cadmium, arsenic and sulphur k) Total of all impurities present, percent by mass, Max saturated with toluene or acetone and then rinse with methanol. Finally, dry the panels in a~current of warm, dry air. During and after degreasing, do not handle the panel by bare hands, but with a pair of clean forceps. C-4 PROCEDURE C-4.1 Carry out the test in triplicate. C-4.2 Weigh each panel accurately. Place the weighed lead panels in the glass containers and add sufficient quantity of the corrosion preventive such that the panels are immersed to a depth of 12 mm below the surface of the corrosion preventive. Close the container with the stopper and place it for 8 hours in the oven maintained at 50 -c 1°C. Remove the container from the oven, withdraw the panels and cool. Remove the' film of corrosion preventive by swabbing lightly with cotton wool soaked in toluene or acetone. Dip the panels in boiling dilute acetic acid for 1 to 2 minutes rinse with water, dry and weigh. C-4.3 Express the average loss in mass of the panels in milligrams per square cetimetre of surface. C-2.1.1 The panel shall be approximately 75 mm x 50 mm x 1.5 mm in size and shall be free from deep scratches and surface imperfections. C-2.2 Toluene or Acetone in A-2.3. Same as described C-2.3 Methanol Same as described C-2.4 Dilute Approximately C-3 CLEANING in B-2.4. Acetic Acid 1 percent by volume. OF LEAD PANELS C-3.1 Clean the panels on both sides and on all edges to a smooth bright finish by scraping with a sharp tool. Clean and degrease by swabbing with a cloth ANNEX D [Table 1, SZNo. (ix)] METHOD D-l APPARATUS D-l.1 Oven controlled and of 50 + 1°C. OF TEST FOR STABILITY acid and finally air dry. D-3 PROCEDURE D-3.1 Fill the Test Tube to within 25 -mm of the top with the corrosion preventive. Close the tube with the-vented cork and then subject it to the temperature cycle stated below: a) b) c) 2 hours at 0 f 1°C. 2 hours at 50 f 1°C. 20 hours at room temperature. The oven shall be thermostatically capable of maintaining a temperature D-l.2 Test Tube The test tube shall be 150 * 10 mm in height and 25 f 5 mm in diameter. It shall be made from heatresistant glass and shall be fitted with a vented cork. D-l.3 Thermometer The thermometer shall be such as to read accurately the required temperature within f 1°C. D-2 CLEANING D-2.1 Clean OF THE TEST TUBE the Test D-3.2 Repeat the above cycle on three consecutive days and then allow the tube to stand disturbed for a further period of 3 days at room temperature. Examine the contents of the tube for separation into layers or sedimentation. D-3.3 The corrosion preventive shall be taken to haves satisfied the requirement of the test if there is no separation of layers or sedimentation. 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